[lld] r202241 - [CMake] Use target_link_libraries(INTERFACE|PRIVATE) on CMake-2.8.12 to increase opportunity for parallel build.

[NAKAMURA Takumi]

Author: chapuni
Date: Wed Feb 26 00:53:16 2014
New Revision: 202241

URL: http://llvm.org/viewvc/llvm-project?rev=202241&view=rev
Log:
[CMake] Use target_link_libraries(INTERFACE|PRIVATE) on CMake-2.8.12 to increase opportunity for parallel build.

target_link_libraries(INTERFACE) doesn't bring inter-target dependencies in add_library,
although final targets have dependencies to whole dependent libraries.
It makes most libraries can be built in parallel.

target_link_libraries(PRIVATE) is used to shaared library.
Each dependent library is linked to the target.so, and its user will not see its grandchildren.
For example,

  - libclang.so has sufficient libclang*.a(s).
  - c-index-test requires just only libclang.so.

FIXME: lld is tweaked minimally. Adding INTERFACE in each library would be better thing.

Modified:
    lld/trunk/lib/Core/CMakeLists.txt
    lld/trunk/lib/ReaderWriter/CMakeLists.txt

Modified: lld/trunk/lib/Core/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/Core/CMakeLists.txt?rev=202241&r1=202240&r2=202241&view=diff
==============================================================================
--- lld/trunk/lib/Core/CMakeLists.txt (original)
+++ lld/trunk/lib/Core/CMakeLists.txt Wed Feb 26 00:53:16 2014
@@ -11,7 +11,7 @@ add_lld_library(lldCore
   SymbolTable.cpp
   )
 
-target_link_libraries(lldCore
+target_link_libraries(lldCore ${cmake_2_8_12_INTERFACE}
   lldNative
   lldYAML
   )

Modified: lld/trunk/lib/ReaderWriter/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/CMakeLists.txt?rev=202241&r1=202240&r2=202241&view=diff
==============================================================================
--- lld/trunk/lib/ReaderWriter/CMakeLists.txt (original)
+++ lld/trunk/lib/ReaderWriter/CMakeLists.txt Wed Feb 26 00:53:16 2014
@@ -15,7 +15,7 @@ add_lld_library(lldReaderWriter
   FileArchive.cpp
   )
 
-target_link_libraries(lldReaderWriter
+target_link_libraries(lldReaderWriter ${cmake_2_8_12_INTERFACE}
   lldCore
   lldPasses
   )